<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title>bootstrap组件使用</title>
		<!---引入jquery资源--->
		<script type="text/javascript" src="js/bootstrap-3.3.7-dist/js/jquery.min.js"></script>
		<!--引入bootstrap的核心js资源文件--->
		<script type="text/javascript" src="js/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
		<!--引入bootstrap的核心css资源文件--->
		<link rel="stylesheet" type="text/css" href="js/bootstrap-3.3.7-dist/css/bootstrap.min.css" />
	</head>

	<body>
		<div >
			<span style="height: 80px;width: 80px; font-size: 30px;" class="glyphicon glyphicon-grain">你好</span>
		</div>
		<button type="button" class="btn btn-default  btn-lg" aria-label="Left Align">
  <span class="glyphicon glyphicon-align-left" aria-hidden="true"></span>
</button>
	</body>

</html>